VulnerabilityPublished 23 Oct 2026

CVE-2026-99047: Linux kernel · gve: fix XSK buffer leak when rings are stopped

Source GCVE Database

Authoritative record:CVE-2026-99047· Medium

Not known to be exploited · fixed in 73670ddb91a4d22e1deb3efd962242de1ec48e90 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 17:16 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 73670ddb91a4d22e1deb3efd962242de1ec48e90, 506f9de069d07a72b9887ce3edd2fdf32f4953aa, 7a7e6bbbf0586c1f62f0cc7d9a2877d8a5e5aaf7

Exploitation evidence

Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-mr8q-3jq6-m2c3

What to do

Upgrade Linux kernel to 73670ddb91a4d22e1deb3efd962242de1ec48e90, 506f9de069d07a72b9887ce3edd2fdf32f4953aa or 7a7e6bbbf0586c1f62f0cc7d9a2877d8a5e5aaf7.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ c1fffc5d66a7147d557736c2341a511e0896d9ff, < 73670ddb91a4d22e1deb3efd962242de1ec48e90	Fixed in 73670ddb91a4d22e1deb3efd962242de1ec48e90
LinuxLinux	Affected ≥ c1fffc5d66a7147d557736c2341a511e0896d9ff, < 506f9de069d07a72b9887ce3edd2fdf32f4953aa	Fixed in 506f9de069d07a72b9887ce3edd2fdf32f4953aa
LinuxLinux	Affected ≥ c1fffc5d66a7147d557736c2341a511e0896d9ff, < 7a7e6bbbf0586c1f62f0cc7d9a2877d8a5e5aaf7	Fixed in 7a7e6bbbf0586c1f62f0cc7d9a2877d8a5e5aaf7
LinuxLinux	Affected =6.17	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: gve: fix XSK buffer leak when rings are stopped GVE does not free XSK buffers when resetting ring state as a part of stopping queues. This causes all XSK buffers which are posted to the NIC to be leaked. Free XSK buffers attached to an allocated buf_state when stopping rings. This issue was hit in production.

References

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